Study Guide Correctly Verified
Segments of DNA that code for proteins are called ______. - Answer Genes
Proteins of polymers are _______. - Answer Amino acids
Consider a strand of DNA with the sequence GAATTCGGCA. What is the sequence of the complimentary
strand? - Answer CTTAAGCCGT
What are the complimentary DNA sequences? - Answer Guanine <-> Cytosine
Adenine <-> Thymine
What is uracil? - Answer In an RNA sequence, Thymine is replaced with Uracil.
Guanine <-> Cytosine
Adenine <-> Uracil
NOT a part of a DNA molecule.
The process of copying a sequence of DNA nucleotides into a complementary sequence of RNA
nucleotides is called _______. - Answer Transcription
The RNA molecule that carries the sequence of nucleotides needed to determine the order of amino
acids in a protein is ________. - Answer messenger RNA (mRNA)
In a certain species of animal, 33% of the bases in its DNA are A. What percent of the bases are C? -
Answer 17%
Which molecule remains in the nucleus during protein synthesis? - Answer DNA
,A typical gene contains instructions for making a ________. - Answer protein
The sequence of events in the process of protein synthesis is usually _______. - Answer DNA-> RNA ->
protein
What is not directly involved in the process of translation? - Answer DNA
What are "highly specific molecular scissors" that cut DNA? - Answer Restriction enzymes.
The structure of a protein is determined by __________. - Answer the sequence of the amino acids it
contains.
What is the function of tRNA molecules during translation? - Answer They carry amino acids to the
ribosome.
The possibly harmful environment effects of GM foods include ____________, ______________, and
__________. - Answer 1. the increased use of herbicides when GM foods are herbicide-resistant
2. the transfer of genetically modified genes to weedy relatives
3. the reduction of genetic diversity in our GM crops
Which of the following variations could be subject to natural selection? - Answer a hyena is born with
spotted fur that helps it hide in grass better than unspotted litter mates.
In a population, which of the individuals are most likely to survive and reproduce? - Answer The
individuals who are best adapted to the environment.
What is true of individuals who are well adapted for a particular environment? - Answer They may or
may not be equally fit in another environment.
, Directional Selection - Answer In population genetics, directional selection is a mode of natural selection
in which an extreme phenotype is favored over other phenotypes, causing the allele frequency to shift
over time in the direction of that phenotype.
You notice squirrels in your neighborhood have a much darker coat color than most of the other
squirrels. Is this darker coat adaption? - Answer The trait is only an adaption if it gives the squirrels an
advantage in their habitat.
What is an allele? - Answer A particular version of a gene.
Why might Archaea be more difficult to grow in the lab than bacteria? - Answer Archaea often grow in
unsual environments that would be hard to reproduce in the lab.
How do fungi obtain food? - Answer Secreting chemicals that break down food and then absorbing it.
How are prokaryotes different from eukaryotes? - Answer Prokaryotes have no nucleus seperating DNA
from the rest of the cell and are simpler cells often with flagella for locomotion. E. coli bacteria are
examples of prokaryotes.
Eurokaryotic cells are complex cells often found in mammals.
Place the following categories in the correct order, from most inclusive to least inclusive: - Answer
Domain, kingdom, phylum, species.
In what ways are fungi similar to animals? - Answer Both take in food from the outside.
If ants attack a tree predator and the tree in turn provides a protected shelter and food, it is an example
of _______. - Answer mutualism
An ecological community of organisms would include all: - Answer plant and animals in a rain forest